Getting Mesh Faces With Specified Normal Via SpaceClaim Scripting (V241)

[jacob.lurvey]

Hi All,

I'm struggling with performing what I think should be a relatively simple task. I have an .STL geometry that I import into SpaceClaim as facets, and I want to keep it that way for eventual import into Fluent Mesher as an .scdoc. It is imported already clipped at both ends, so I know the location of the inlet and outlet. I've attached a picture of the geometry.

What I want to do is to get all the faces on the inlet and outlet (shown highlighted in orange here) and put them in a named selection. Ideally, I would select all faces with the correct normal vector, but any method that will allow me to automate named selections for the inlet and outlet will work.

 The reason I need to automate this is because I want to process a whole load of similar geometries, all of which have known normals for the inlet and outlet facets. However, since I have to call GetRootPart.Meshes[0] instead of GetRootPart.Bodies[0], lots of the methods in the documentation don't seem to work. Is there any way to do this in SpaceClaim scripting?

 

Thanks for any help you can provide

[Atharv Joshi]

Hi Jacob, 

 

Thanks for sharing the details about your problem. 

Let me check this and get back to you. 

 

Regards

Atharv

[jacob.lurvey]

I managed to solve the problem using the following code:

inlet_selection = Selection.Create(
    RayFire.Fire(
        inlet_rayfire_origin,
        inlet_rayfire_direction,
        pixel_size,
        hit_radius
    )[1].GetConnection(0))

inlet = NamedSelection.Create(inlet_selection, empty_selection, "mass-flow-inlet")

where inlet_rayfire_origin and inlet_rayfire_direction are a Point and Direction, respectively. Not sure why I have to call RayFire.Fire()[1] instead of [0], but it throws an error otherwise. Any ideas on why? It would be interesting to know. The call to .GetConnection(0) allows me to select all the coplanar facets.